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Billing code

A100A — Family Physician ER Department Assessment

Own patient seen in emergency

A family physician bills A100 for assessing their own patient in an emergency department funded under an ED alternative funding agreement.

Watch for: Bill it only under specialty 00 with the emergency department's hospital master number; no other service is payable for that ED visit.

Code

A100A

Description

Family Physician ER Department Assessment

FHO+ basket

Not in the FHO+ base rate basket (Schedule 2 or 2B).

Effective date

Apr 1, 2026

Termination date

No end date

Explanation

Updated October 26, 2026

Family physician's assessment of their own patient in an emergency department funded under an ED alternative funding agreement (ED-AFA).

What it covers

A100 is an assessment of a patient by the patient's own general or family physician in an emergency department funded under an Emergency Department Alternative Funding Agreement. It must meet at least the requirements of an intermediate assessment (A7).

It includes any re-assessment by you in the ED during that visit and any collaboration with the ED physician. It is payable only when your attendance is needed because of the complexity, obscurity or seriousness of the patient's condition (A7).

Billing rules

• Only for your own patient in an ED funded under an ED-AFA; in an ED not funded this way, bill other fee codes instead (A7).
• No other service, including special visit or other premiums, is payable to you for the same patient during the same ED visit (A7).
• Put the hospital master number for the emergency department on the claim (A7).
• If you admit the patient and remain the MRP, A100 is the admission assessment (A7, GP41).
• In an ED-AFA emergency department, A100 by the patient's own family physician is one of the few services still paid fee-for-service (GP110).

Common rejections

• EQL: A100 was billed under a specialty other than 00, or by a provider with an ED alternate funding (EDAFA) group number (Ministry error code list).
• EQK: The master number doesn't meet the criteria for A100, for example A100 billed with a specialty code other than 00; check the ED's hospital master number and your specialty (Ministry error code list).

Related codes: A007, A933, A003, A004, C004

Source: Schedule of Benefits (July 1, 2026), Consultations and Visits, Family Practice & Practice in General (00), page A7; rules GP41, GP110.

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